Personally do not like AdwCleaner. that's about it. It has downloaded a couple files labeled as vir. My only problem is that program. Haven't checked out the rest of the website. Perhaps biased, but just an opinion.

Negative reviews are probably from competitors. Site never asks for any information and...wait, seriously? They're claiming AdwCleaner installed malware on their computer? You have to try better than that. :|

When my wife ran AdwCleaner v4.102 there were many other programs that wanted to be installed. Even though she said no to each, some of them installed anyway and because we said no, we never did get the AdwCleaner program. Update: Don't run this program as it put 31 PuPs on wife's computer (remove using Malwarebytes program)